diff --git a/octoprint_enclosure/__init__.py b/octoprint_enclosure/__init__.py
index 9b5a0ef..0759768 100644
--- a/octoprint_enclosure/__init__.py
+++ b/octoprint_enclosure/__init__.py
@@ -107,7 +107,7 @@ class EnclosurePlugin(octoprint.plugin.StartupPlugin,
                 val = GPIO.input(pin) if not rpi_output['activeLow'] else (not GPIO.input(pin))
             if getOutputStatusresult:
                 getOutputStatusresult = getOutputStatusresult + ', '
-            getOutputStatusresult = getOutputStatusresult + '"' + str(pin) + '": ' + str(val)
+            getOutputStatusresult = getOutputStatusresult + '"' + str(pin) + '": ' + str(val).lower()
         return '{' + getOutputStatusresult + '}'